PT - JOURNAL ARTICLE AU - Roger G. Ibbotson AU - Laurence B. Siegel TI - The World Market Wealth Portfolio* AID - 10.3905/jpm.1983.408915 DP - 1983 Jan 31 TA - The Journal of Portfolio Management PG - 5--17 VI - 9 IP - 2 4099 - https://pm-research.com/content/9/2/5.short 4100 - https://pm-research.com/content/9/2/5.full